Multiple component solid state white light
First Claim
1. A white light emitting lamp, comprising:
- a solid state ultra violet (UV) emitter emitting light in the UV wavelength spectrum;
a conversion material arranged to absorb at least some of the light emitting from said UV emitter and re-emit light at one or more different wavelength spectrums of light; and
one or more complimentary solid state emitters emitting different wavelength spectrums of light than said UV emitter and said conversion material, said lamp emitting a white light combination of light emitted from said complimentary emitters and from said conversion material, said white light having high efficacy and good color rendering;
said UV and complimentary emitters being mounted in a reflector element having conductors to apply a bias to said emitters, said bias causing said emitters to emit light.
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Accused Products
Abstract
A white light emitting lamp is disclosed comprising a solid state ultra violet (UV) emitter that emits light in the UV wavelength spectrum. A conversion material is arranged to absorb at least some of the light emitting from the UV emitter and re-emit light at one or more different wavelengths of light. One or more complimentary solid state emitters are included that emit at different wavelengths of light than the UV emitter and the conversion material. The lamp emits a white light combination of light emitted from the complimentary emitters and from the conversion material, with the white light having high efficacy and good color rendering. Other embodiments of white light emitting lamp according to the present invention comprises a solid state laser instead of a UV emitter. A high flux white emitting lamp embodiment according to the invention comprises a large area light emitting diode (LED) that emits light at a first wavelength spectrum and includes a conversion material. A plurality of complimentary solid state emitters surround the large area LED, with each emitter emitting light in a spectrum different from the large area LED and conversion material such that the lamp emits a balanced white light. Scattering particles can be included in each of the embodiments to scatter the light from the emitters, conversion material and complimentary emitters to provide a more uniform emission.
288 Citations
44 Claims
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1. A white light emitting lamp, comprising:
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a solid state ultra violet (UV) emitter emitting light in the UV wavelength spectrum;
a conversion material arranged to absorb at least some of the light emitting from said UV emitter and re-emit light at one or more different wavelength spectrums of light; and
one or more complimentary solid state emitters emitting different wavelength spectrums of light than said UV emitter and said conversion material, said lamp emitting a white light combination of light emitted from said complimentary emitters and from said conversion material, said white light having high efficacy and good color rendering;
said UV and complimentary emitters being mounted in a reflector element having conductors to apply a bias to said emitters, said bias causing said emitters to emit light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 14, 15, 16, 17, 18, 19, 20)
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10. (Canceled)
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13. (Canceled)
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21. A white light emitting lamp, comprising:
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a solid state laser emitting light in a first wavelength spectrum;
a conversion material arranged to absorb at least some of the light emitting from said laser and re-emit light at one or more different wavelength spectrums of light; and
one or more complimentary solid state emitters emitting different wavelengths of light than said laser and said conversion material, said lamp emitting a white light combination of light emitted from said laser, complimentary emitters, and conversion material, said white light having high efficacy and good color rendering;
said laser emitting light in the blue wavelength spectrum, said conversion material absorbing some of the light emitting from said laser and re-emitting a wavelength of light in the green spectrum, the non-absorbed blue light passing through said conversion material. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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22. (Canceled)
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23. (Canceled)
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30. A white light emitting lamp, comprising:
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a first solid state emitter emitting light in a first wavelength spectrum;
a conversion material to absorb at least some of the light from said first solid state emitter, and emit light at one or more different wavelength spectrums;
one or more complimentary emitters each of which emits light at a wavelength spectrum different from said first wavelength spectrum and said conversion material wavelength spectrums; and
scattering particles arranged to scatter the light from said first emitter, conversion material and complimentary emitters, said lamp emitting a uniform white light combination of light from said first emitter, conversion material and complimentary emitters;
said scattering particles each having a diameter of approximately one half a wavelength of light emitted by either said first emitter, conversion material or complimentary emitters. - View Dependent Claims (32, 33, 34, 35)
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31. (Canceled)
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36. A high flux white emitting lamp, comprising:
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a large area light emitting diode (LED) emitting light at a first wavelength spectrum;
a conversion material arranged to absorb at least some of the light from said large area LED, and re-emit at least one wavelength light in a spectrum different from said first wavelength spectrum; and
a plurality of complimentary solid state emitters surrounding said large area LED and each emitting light in a spectrum different from said large area LED and said conversion material, said lamp emitting a balanced and uniform white light combination of light from said large area LED, conversion material and complimentary emitters, said white light having high efficacy and good color rendering;
said conversion material covering both said large area LED and said plurality of complimentary emitters, most of the light from said complimentary emitters passing through said conversion material without being absorbed. - View Dependent Claims (38, 39, 40, 41)
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37. (Canceled)
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42. A method for producing white light with high efficacy and good color rendering, comprising:
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generating light in the UV wavelength spectrum;
passing said UV light through a conversion material that absorbs said UV light and re-emits light at one or more different wavelength spectrums;
generating complimentary light at one or more wavelength spectrums that is different from said conversion material wavelength spectrums;
combining said conversion material light and said complimentary light to generate white light with high efficacy and good color rendering; and
providing reflective element that reflects said UV light, complimentary light and conversion material light such that all contribute to light emission direction, said reflective element also comprising a means for causing said light generation. - View Dependent Claims (43)
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44. A method for producing white light with high efficacy and good color rendering, comprising:
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generating laser light;
passing said laser light through a conversion material that absorbs at least some of said laser light and re-emits light at one or more different wavelength spectrums;
generating complimentary light at one or more wavelength spectrums that is different from said conversion material wavelength spectrums; and
combining said conversion material light and said complimentary light to generate white light with high efficacy and good color rendering, said laser light being blue light, said conversion material absorbing some of the light emitting from said laser and re-emitting a wavelength of light in the green spectrum, the non-absorbed blue light passing through said conversion material.
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Specification